C - 内存对齐 (Memory Alignment)

以下内容摘自此文: http://www.cse.bgu.ac.il/common/download.asp?FileName=Memory%20Alignment.pdf&AppID=2&MainID=570&SecID=3014&MinID=2

Memory Alignment on different architectures

Memory address	Alignment (8 bit)	Alignment (16bit)	Alignment (32bit)	Alignment (64 bit)
0x0000_0000	Aligned	Aligned	Aligned	Aligned
0x0000_0001	Aligned	Non Aligned	Non Aligned	Non Aligned
0x0000_0002	Aligned	Aligned	Non Aligned	Non Aligned
0x0000_0003	Aligned	Non Aligned	Non Aligned	Non Aligned
0x0000_0004	Aligned	Aligned	Aligned	Non Aligned
0x0000_0005	Aligned	Non Aligned	Non Aligned	Non Aligned
0x0000_0006	Aligned	Aligned	Non Aligned	Non Aligned
0x0000_0007	Aligned	Non Aligned	Non Aligned	Non Aligned
0x0000_0008	Aligned	Aligned	Aligned	Aligned